设数列{an}的前n项和为Sn,已知S1=1,Sn+1/Sn=n+c/n (c为常数,c≠1,n∈N*)且a1,a2,a3成等差数列(3)若数列{bn}是首项为1,公比为c的等比数列,记An=a1b1=a1b2+...+anbn,Bn=a1b1-a2b2+...+(-1)^n-1anbn,n属于正整数.证明
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![设数列{an}的前n项和为Sn,已知S1=1,Sn+1/Sn=n+c/n (c为常数,c≠1,n∈N*)且a1,a2,a3成等差数列(3)若数列{bn}是首项为1,公比为c的等比数列,记An=a1b1=a1b2+...+anbn,Bn=a1b1-a2b2+...+(-1)^n-1anbn,n属于正整数.证明](/uploads/image/z/4049247-39-7.jpg?t=%E8%AE%BE%E6%95%B0%E5%88%97%7Ban%7D%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8C%E4%B8%BASn%2C%E5%B7%B2%E7%9F%A5S1%3D1%2CSn%2B1%2FSn%3Dn%2Bc%2Fn+%28c%E4%B8%BA%E5%B8%B8%E6%95%B0%2Cc%E2%89%A01%2Cn%E2%88%88N%2A%29%E4%B8%94a1%2Ca2%2Ca3%E6%88%90%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%EF%BC%883%EF%BC%89%E8%8B%A5%E6%95%B0%E5%88%97%7Bbn%7D%E6%98%AF%E9%A6%96%E9%A1%B9%E4%B8%BA1%2C%E5%85%AC%E6%AF%94%E4%B8%BAc%E7%9A%84%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97%2C%E8%AE%B0An%3Da1b1%3Da1b2%2B...%2Banbn%2CBn%3Da1b1-a2b2%2B...%2B%EF%BC%88-1%EF%BC%89%5En-1anbn%2Cn%E5%B1%9E%E4%BA%8E%E6%AD%A3%E6%95%B4%E6%95%B0.%E8%AF%81%E6%98%8E)
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设数列{an}的前n项和为Sn,已知S1=1,Sn+1/Sn=n+c/n (c为常数,c≠1,n∈N*)且a1,a2,a3成等差数列(3)若数列{bn}是首项为1,公比为c的等比数列,记An=a1b1=a1b2+...+anbn,Bn=a1b1-a2b2+...+(-1)^n-1anbn,n属于正整数.证明
设数列{an}的前n项和为Sn,已知S1=1,Sn+1/Sn=n+c/n (c为常数,c≠1,n∈N*)且a1,a2,a3成等差数列
(3)若数列{bn}是首项为1,公比为c的等比数列,记An=a1b1=a1b2+...+anbn,Bn=a1b1-a2b2+...+(-1)^n-1anbn,n属于正整数.证明An+3B2n<=-4
设数列{an}的前n项和为Sn,已知S1=1,Sn+1/Sn=n+c/n (c为常数,c≠1,n∈N*)且a1,a2,a3成等差数列(3)若数列{bn}是首项为1,公比为c的等比数列,记An=a1b1=a1b2+...+anbn,Bn=a1b1-a2b2+...+(-1)^n-1anbn,n属于正整数.证明
An=a1b1=a1b2+...+anbn有误应是An=a1b1+a2b2+...+anbn
An+3B2n
设数列{an}的前n项和为Sn 已知1/S1+1/S2+
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